Happens infrequently, but when running samples in 96 well format, the guava/incyte software stops and will draw up all of the volume in the well without registering any counts. after this the guava and incyte software will be unresponsive and usually requires a complete restart to get running again. The problem usually occurs when running >20 samples. We have had millipore service the guava and was given a loaner laptop to use with the guava. I am assuming it is a communication issue between the machine and the computer. Any thoughts or suggestions? Thanks!